Sealing strip



Sept. ll, 1951 J. w. MARSDEN SEALING STRIP Filed April 22, 1946 3 2 4 Z H 0 w if INVENTOR.

(l Wllanv'en/ Patented Sept. 11,1951

UNITED STATES PATENT OFFICE SEALIN'GV STRIP 4 James W. Marsden, lSan Francisco, Calif. j lApplicationApril 22, 1946, Serial No. 664,011

This invention relates to a sealing apparatus designed primarily for use with doors or swinging closures of radio studios, the primary object of the invention being to provide a vertically movable strip which is actuated by the movement of the door to its open or closed position, to provide a sound-proofing seal between the bottom of the door or closure and the sill associated therevith when the door is moved to its closed posiion.

Another object of the invention is to provide means for automatically elevating the sealing strip as the door or closure moves to its open position, thereby eliminating wear which would otherwise be directed to the strip should the strip drag over the floor surface, during the opening, or closing of the door.

With the foregoing and other objects in View which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts, hereinafter more fully described and pointed out in the claim, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawing:

Figure 1 is a Vertical sectional View of a door in its open position, the door being equipped with a sealing strip constructed in accordance with the invention.

Figure 2 is an enlarged fragmental sectional view illustrating the sealing strip showing the position of the weather strip when the closure is in its closed position.

Figure 3 is a sectional view taken on line 3--3 of Figure 1.

Figure 4 is a sectional view taken on line 4-4 of Figure l.

Referring to the drawing in detail, the reference character 5 indicates a swinging door or closure which is supported within the frame 6 that includes the sill 1. The closure 5 is formed with a groove 8 extending inwardly from the lower edge thereof, the groove 8 providing a housing for the vertically movable sealing strip.

The sealing strip embodies a rear supporting plate 9 which is secured against the rear wall of the groove 8, the supporting plate 9 being formed with a laterally extended flange Ill which has its longitudinal edge extended downwardly as at II. The ange II] provides a guideway with the rear supporting plate 9, for the actuating bar l 2 which is slidably mounted therein, the bar being formed with a threaded extension I3 that fits in Ya v1 claim. gol. :zo- 68) threaded bore formed in the plunger'head I4 which extends through the plate. I5 that closes one end of the groove 8, as clearly shown by the drawing.

The lower longitudinal edge of the rear supporting plate 9 extends inwardly at right-angles with respect to the main portion of the plate, bracing the lower edge of the plate 9.

The movable sealing strip embodies a length of sheet metal material l1 which is formed with cut-out portions I8 providing clearances for the pivot pins I9 that are connected with the rear supporting plate 9. These pins I9 provide supports for the links 20 that have pivotal connection with the member I'I, at 2 I. The links 29 are also connected with the actuating bar I2, through the pivot pins 22, with the result that as the actuating bar I2 moves rearwardly within the groove, the links will swing to cause the member I'I to move downwardly.

A coiled spring indicated at 23 has one of its ends connected with the actuating bar I2, while the opposite end thereof, connects with the rear supporting plate 9, through the pin 24. This spring acts to return the member I'I to its upper or inactive position, when the closure moves to its open position.

The length of sheet metal of which the member I'I is formed, is extended laterally and downwardly providing spaced walls 25 between which the felt sealing strips 26 are held. These sealing strips 26 are so disposed that they will move downwardly into close engagement with the sill of the closure, when the closure swings to its closed position.

In order that the device may be adjusted within the groove of the door, a recessed member 21 is provided, the member 21 having an elongated opening in which the screw 28 is positioned, the screw 28 extending into the rear supporting plate 9 where it is connected thereto. Thus it will be seen that due to this construction, the initial adjustment of the sealing strip may be readily made. It will of course be understood that when this adjustment is made, the screw 28 will act to secure the device in position.

From the foregoing it will seen that due to the construction shown and described, the sealing strip will move downwardly to engage the sill of the closure when the closure moves to its closed position, the movement of the sealing strip being accomplished by the plunger head I4 engaging the wear plate 29 secured to the frame of the closure. As the plunger head and actuating bar are moved due to the contact of 3 'the plunger head with the plate 29, the sealing strip will move downwardly closing the space between the bottom of the closure and the sill.

What is claimed is:

The combination with the sill of a swinging closure having a recess formed along the lower edge thereof, of a sealing strip comprising a stationary rear supporting plate having a forwardly and downwardly extended flange forming one edge thereofV the free edge of the forwardly and downwardly extended flange being spaced an appreciable distance from the lower edge of the recess providing a housing, secured within the recess in which the sealing strip is mounted,

a vertically movable sealing strip also mounted within the housing, rectangular links pivotally connected with the supporting plate and vertically movable sealing strip, an actuating bar movable longitudinally of the supporting plate, means for pivotally connecting said actuating bar with one ofk the respective corners of each rectangular link, whereby movement of the actu- REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 344,773 Duiee June 29, 1886 649,150 Winter May 8, 1900 2,344,278 Balousek Mar. 14, 1944 FOREIGN PATENTS Number Country Date 10,195 Great Britain June 16, 1891 

